An small aircraft landed without clearance.

Attributes
ACN	253535
Time
Date	199310
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ash
State Reference	NH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ash
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach landing other
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 25 flight time total : 5000 flight time type : 3000
ASRS Report	253535
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 22 flight time total : 4615 flight time type : 3000
ASRS Report	253794
Events
Anomaly	incursion : landing without clearance non adherence : far non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Student's GS receiver weak. Coaching use of stepdown fixes. Marker weak, only operational in 'HF' sens position. High workload getting on GS and ensuring proper altitudes. Missed 'tower at marker' call. Landed without clearance. Entirely pilot error.

Original NASA ASRS Text

Title: AN SMA LANDED WITHOUT CLRNC.

Narrative: STUDENT'S GS RECEIVER WEAK. COACHING USE OF STEPDOWN FIXES. MARKER WEAK, ONLY OPERATIONAL IN 'HF' SENS POS. HIGH WORKLOAD GETTING ON GS AND ENSURING PROPER ALTS. MISSED 'TWR AT MARKER' CALL. LANDED WITHOUT CLRNC. ENTIRELY PLT ERROR.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.